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WEEK 20:

Introduction to the mediastinum:

QuestionAnswer
superior mediastinum boundary superior thoracic aperture (inlet)
inferior mediastinum boundary diaphragm
anterior mediastinum boundary sternum + costal cartilage
posterior mediastinum boundary T1-T12 vertebrae
lateral mediastinum boundary mediastinal pleurae
contents of the anterior mediastinum stemopericardial ligament, fat, lymph nodes + vessels, branches of internal thoracic vessels, and remnant of thymus (primary lymphoid organ)
boundaries of superior mediastinum inferiorly - transverse thoracic line (TTP) and posteriorly - T1+T3 thoracic body
contents of superior mediastinum (10) heart, pericardium, root of great vessels, trachea, main bronchi, arch of agygos vein, lymphatic node. phrenic nerve. vagus and cardiac plexus
great vessels-arteries** terminates at 4th wall diving into
arch of aorta becomes
internal external artery - branch off
brachiocephalic /=** L R (upper)
great vessels- veins
nerves (15)
trachea cartilage c- hyaline
where does trachea start v6
carina point of bifurcation of trachea into main bronchi
point at which bifurcation of trachea + where right lymphatic duct + thoracic duct** T4/5
azygous system of veins (3) azygous, accessory gemi-azygous, and him-axygos
identify azygous vein**
oeseophagus compressed by (4) aortic arch, left main bronchus, heart due to left atrium, and diaphragm
radiology showing mediastinal shift/ displacement when trachea used to npow onto the side t shift
widening of medistinum
Created by: kablooey
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